226 lines
8.4 KiB
Python
226 lines
8.4 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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#
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# 2010-2013 Nico Schottelius (nico-cdist at schottelius.org)
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#
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# This file is part of cdist.
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#
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# cdist is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# cdist is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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#
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import logging
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import os
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import stat
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import shutil
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import sys
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import tempfile
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import time
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import itertools
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import pprint
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import cdist
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from cdist import core
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from cdist import resolver
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class ConfigInstall(object):
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"""Cdist main class to hold arbitrary data"""
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def __init__(self, context):
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self.context = context
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self.log = logging.getLogger(self.context.target_host)
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# Initialise local directory structure
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self.context.local.create_files_dirs()
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# Initialise remote directory structure
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self.context.remote.create_files_dirs()
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self.explorer = core.Explorer(self.context.target_host, self.context.local, self.context.remote)
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self.manifest = core.Manifest(self.context.target_host, self.context.local)
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self.code = core.Code(self.context.target_host, self.context.local, self.context.remote)
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# Add switch to disable code execution
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self.dry_run = False
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def cleanup(self):
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# FIXME: move to local?
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destination = os.path.join(self.context.local.cache_path, self.context.target_host)
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self.log.debug("Saving " + self.context.local.out_path + " to " + destination)
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if os.path.exists(destination):
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shutil.rmtree(destination)
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shutil.move(self.context.local.out_path, destination)
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def deploy_to(self):
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"""Mimic the old deploy to: Deploy to one host"""
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# Old Code
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# self.stage_prepare()
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# self.stage_run()
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# New Code
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self.run()
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def deploy_and_cleanup(self):
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"""Do what is most often done: deploy & cleanup"""
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start_time = time.time()
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self.deploy_to()
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self.cleanup()
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self.log.info("Finished successful run in %s seconds",
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time.time() - start_time)
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######################################################################
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# New code for running on object priority (not stage priority)
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#
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def run(self):
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"""The main runner"""
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self.explorer.run_global_explorers(self.context.local.global_explorer_out_path)
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self.manifest.run_initial_manifest(self.context.initial_manifest)
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self.iterate_until_finished()
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def object_list(self):
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"""Short name for object list retrieval"""
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for cdist_object in core.CdistObject.list_objects(self.context.local.object_path,
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self.context.local.type_path):
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yield cdist_object
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def iterate_until_finished(self):
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# Continue process until no new objects are created anymore
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objects_changed = True
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while objects_changed:
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objects_changed = False
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for cdist_object in self.object_list():
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if cdist_object.requirements_unfinished(cdist_object.requirements):
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"""We cannot do anything for this poor object"""
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continue
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if cdist_object.state == core.CdistObject.STATE_UNDEF:
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"""Prepare the virgin object"""
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self.object_prepare(cdist_object)
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objects_changed = True
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if cdist_object.requirements_unfinished(cdist_object.autorequire):
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"""The previous step created objects we depend on - wait for them"""
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continue
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if cdist_object.state == core.CdistObject.STATE_PREPARED:
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self.object_run(cdist_object)
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objects_changed = True
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# Check whether all objects have been finished
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unfinished_objects = []
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for cdist_object in self.object_list():
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if not cdist_object.state == cdist_object.STATE_DONE:
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unfinished_objects.append(cdist_object)
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if unfinished_objects:
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info_string = []
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for cdist_object in unfinished_objects:
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requirement_names = []
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autorequire_names = []
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for requirement in cdist_object.requirements_unfinished(cdist_object.requirements):
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requirement_names.append(requirement.name)
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for requirement in cdist_object.requirements_unfinished(cdist_object.autorequire):
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autorequire_names.append(requirement.name)
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requirements = ", ".join(requirement_names)
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autorequire = ", ".join(autorequire_names)
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info_string.append("%s requires: %s autorequires: %s" % (cdist_object.name, requirements, autorequire))
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raise cdist.Error("The following objects could not be resolved: %s" %
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("; ".join(info_string)))
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######################################################################
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# Stages based code
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#
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def stage_prepare(self):
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"""Do everything for a deploy, minus the actual code stage"""
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self.explorer.run_global_explorers(self.context.local.global_explorer_out_path)
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self.manifest.run_initial_manifest(self.context.initial_manifest)
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self.log.info("Running object manifests and type explorers")
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# Continue process until no new objects are created anymore
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new_objects_created = True
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while new_objects_created:
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new_objects_created = False
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for cdist_object in core.CdistObject.list_objects(self.context.local.object_path,
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self.context.local.type_path):
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if cdist_object.state == core.CdistObject.STATE_PREPARED:
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self.log.debug("Skipping re-prepare of object %s", cdist_object)
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continue
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else:
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self.object_prepare(cdist_object)
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new_objects_created = True
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def object_prepare(self, cdist_object):
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"""Prepare object: Run type explorer + manifest"""
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self.log.info("Running manifest and explorers for " + cdist_object.name)
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self.explorer.run_type_explorers(cdist_object)
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self.manifest.run_type_manifest(cdist_object)
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cdist_object.state = core.CdistObject.STATE_PREPARED
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def object_run(self, cdist_object, dry_run=False):
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"""Run gencode and code for an object"""
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self.log.debug("Trying to run object " + cdist_object.name)
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if cdist_object.state == core.CdistObject.STATE_DONE:
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raise cdist.Error("Attempting to run an already finished object: %s", cdist_object)
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cdist_type = cdist_object.cdist_type
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# Generate
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self.log.info("Generating and executing code for " + cdist_object.name)
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cdist_object.code_local = self.code.run_gencode_local(cdist_object)
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cdist_object.code_remote = self.code.run_gencode_remote(cdist_object)
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if cdist_object.code_local or cdist_object.code_remote:
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cdist_object.changed = True
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# Execute
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if not dry_run:
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if cdist_object.code_local:
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self.code.run_code_local(cdist_object)
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if cdist_object.code_remote:
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self.code.transfer_code_remote(cdist_object)
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self.code.run_code_remote(cdist_object)
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# Mark this object as done
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self.log.debug("Finishing run of " + cdist_object.name)
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cdist_object.state = core.CdistObject.STATE_DONE
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def stage_run(self):
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"""The final (and real) step of deployment"""
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self.log.info("Generating and executing code")
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objects = core.CdistObject.list_objects(
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self.context.local.object_path,
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self.context.local.type_path)
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dependency_resolver = resolver.DependencyResolver(objects)
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self.log.debug(pprint.pformat(dependency_resolver.dependencies))
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for cdist_object in dependency_resolver:
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self.log.debug("Run object: %s", cdist_object)
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self.object_run(cdist_object)
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